Hose-coupling.



A. GABROHN.

HOSE o'oUPLING.

APPLICATION FILED JUNEv 8, 1912.

1, 1 3,770, Patented Oct. 13, 1914.

www!!! I lbert Gabrohn 'narran srarns PATENT: oFFIoE.

.ALBERT GABROHN, OF DETR-IT, MICHIGANX l HOSE-COUPLING.

Application tiled June S,

To all whom t may concern Be it known that I, vLBER'L GrARoHN, a citizen of the United States of America, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful improvements in Hose- V'Couplings, of which the following is a specification, reference being had therein to the accompanj-,fing drawings.

This invention relates to improvements in hose couplings and more'particularly to a coupling for high pressure hose such as is used for conducting air under pressure and its object is to provide a simple device which is so constructed that it will not cut or otherwise injure the hose to which it is attached and will obviate the possibility of leakage.

To this end the invention consists in the matters hereinafter set forth and more particularly pointed out in the claim reference being had to the accompanying drawing in which- I Figure 1 is a longitudinalsection through a coupling embodying the invention; Fig. 2 is a side elevation of a couplingtube; Fig. 3 is a side elevation of a split clamping sleeve, and Fig. a is an end elevation of Fig. 3.

ls shown in the drawing 10 is the end of a flexible hose or'tube' forming a conduit for air or other fluid under heavy pressure. Upon the end of the hose 10-is slipped a split clamping sleeve .11 having an inwardly projecting flange" 12 to engage the end of the hose and formed with a conical outer surface extending from the opposite end of the sleeve. The sleeve is split or severed from end to end at 13 and is also formed with slits or cuts 14e extending from the thin end of the sleeve to the collar 12 .which vforms a connecting portion holding the parts between the cuts together. l

A connecting tube 15 is inserted at one end into the end of the hose and passes loosely through the ila-nge 12 of the split sleeve. This tube is formed intermediate its ends with an integral liange 16 adapted -to abut the flanged end of the split sleeve 11 and the outer end lof the tube is screwthreaded or otherwise formed for its con-A nection to a coupling nut or any other part -to which it is desired to attach the hose.

A coupling sleeve 17 is .movable longi tudinally of the hose and is formed with a tapering' bore to fit the tapered outer' surface of the split sleeve 11.` The coupling l sleeve is-also formed with an enlarged and Specification of Letters Patent.

1912. Serial No. 702,480.

internally screwthreaded boreA 18 at one end and this end is also formed with a hexagonal head l19 .for the engagement of a'wrench. A clamping nut 2O having an external screwthread to engage the internal screwthread of the chamber lpSis provided with an axial bore through which the coupling tube 15 extends and this nut is adapted to engage the flange 16' on the coupling tube at its inner end so that when it is screwed into the chamber 1S the tube together with the split sleeve will be forced longitudinally of the clamping sleeve 17 and 'by reason ofthe tapering contact surfaces of the two sleeves, the split sleeve will be contracted upon the end of the hose and firmly clamp they same to theend of the coupling tube which is formed with grooves 21 into which the flexible tube will be pressed to firmly hold the tachment.

In this construction the end ofv the rubber tube is compressed within the split sleeve which sleeve does not extend the full length 'of the 'clamping sleeve 17 so that the hose is relieved slightly at the end of the clamping sleeve so that it will vnot be pinched at that point and thus cause it to crackv and break loff'. The arrangement of two sliding tapered sleeves forced upon each other by means of the nut gives a very strong clamping effect and all possibility of leakage is obviated. .'lxhe flange 12 on the split sleeve which engages the end of the hose also assists in making a tight joint and in protecting the hose against injury. v

Obviously, changesmay be made in the details of construction without4 departing from the spirit of my invention and I do not wish to limit myself to thev particular form and arrangement shown.

Having thus fully described my invention what I claim is In a coupling, the combination with 'a flexible conduit formed of compressible material, a couplin end of the con uit and having annular grooves formed therein in which the walls of said conduit engage, a split sleeve on the conduit having an inwardly extending lange engaging the end of the conduit and formed with an outer surface which is same upon the tube against possible detapered inward from the flanged end to the 110 Patented oct. 13,1914.

tube extending into an the split sleeve and adapted to depress the and engaging the flange thereof and enterslitted portions of said sleeve and having an i ing said clamping sleeve to lnove said sleeve internal tapering bore to engage the tapered longitudinally of said split and slitted surface of the split sleeve and formed with sleeve. I 5 an internally screw threaded bore at one end' n testimony whereof I aflix my signature 1.5

adjacent to the flanged end of the split in presence of two witnesses. sleeve, a peripheral flange on the coupling ALBERT GABROHN. tube and against which the flanged end of the split sleeve abuts, and an externally lo threaded nut surrounding said coupling tube Witnesses:

ANNA M., Donn, LEWIS E. FLANDERS. 

